#B1D63B#B1D63B

#B1D63B is a very light, vivid yellow-green. Relative luminance 0.578; OKLCH L 82.2% C 0.179 H 122.3°. Best body text is #000000 at 12.55:1 contrast (WCAG AA passes).

Color values

HEX#B1D63B
RGBrgb(177, 214, 59)
HSLhsl(74, 65%, 54%)
HSVhsv(74, 72%, 84%)
CMYKcmyk(17.3%, 0%, 72.4%, 16.1%)
CIE-LABlab(80.60, -32.65, 68.02)
CIE-LCHlch(80.60, 75.45, 115.64°)
OKLaboklab(82.17% -0.0956 0.1513)
OKLCHoklch(82.17% 0.179 122.3)
XYZxyz(42.9680, 57.7559, 13.0212)
Luminance0.5776 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B1D63B #603BD6
analogous
#D6AE3B #B1D63B #63D63B
triadic
#B1D63B #3BB1D6 #D63BB1
tetradic
#B1D63B #3BD6AE #603BD6 #D63B63
square
#B1D63B #3BD6AE #603BD6 #D63B63
split-complementary
#B1D63B #3B63D6 #AE3BD6
monochromatic
#657D1A #8EAF25 #B1D63B #C5E16E #D9EBA0

Accessibility & contrast

On white

1.67
#B1D63B on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

12.55
#B1D63B on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D63B
12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B1D63B#FFFFFF#000000##000000
##B1D63B1.001.6712.5512.55
#FFFFFF1.671.0021.0021.00
#00000012.5521.001.001.00
##00000012.5521.001.001.00

Color blindness preview

Protanopia (red-blind)
#E3C91D
Deuteranopia (green-blind)
#DEC849
Tritanopia (blue-blind)
#BACBB8
Achromatopsia (no color)
#C8C8C8

Design tokens & code

CSS
--color: #b1d63b;
/* rgb */ color: rgb(177, 214, 59);
/* oklch */ color: oklch(82.2% 0.179 122.3);
Tailwind
colors: {
  custom: {
    50: '#cce27b',
    500: '#b1d63b',
    950: '#000000',
  },
}
SCSS
$custom: #b1d63b;
$custom-light: #cce27b;
$custom-dark: #000000;
JSON
{
  "hex": "#b1d63b",
  "rgb": {
    "r": 177,
    "g": 214,
    "b": 59
  },
  "hsl": {
    "h": 74.323,
    "s": 65.401,
    "l": 53.529
  },
  "oklch": {
    "l": 0.82165,
    "c": 0.17899,
    "h": 122.3
  },
  "luminance": 0.57756
}

Semantic roles & 50–950 ramp

primary
#B1D63B
secondary
#453184
accent
#3FE868
background
#FEFEFB
surface
#FBFCF2
border
#D4D5CC
text
#14150A
muted
#83847D

Preview Lab

Preview with #B1D63B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#B1D63B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva